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When somebody was stabbed, all the knives in the village were collected. When flies were attracted to the blood on the murderer's knife, the murderer confessed.
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Orfila published the first scientific paper on the detection of poisons and their effects on animals. This contribution gave him the name of "The Father of Forensic Toxicology."
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Herschel used thumbprints on documents to identify workers in India.
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Bertillon developed anthropometry, which uses body measurements to distinguish individuals. He came to be known as "The Father of Criminal Identification."
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He used fingerprints to eliminate an innocent burglary suspect.
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Doyle published his first Sherlock Holmes story, which later came to be featured in four novels and 56 short stories. These stories popularized the scientific methods of crime scene investigation.
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Galton published Finger Prints. He conducted the first scientific study of fingerprints and their classification. He also proved that all fingerprints are unique.
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Gross wrote the first paper describing the application of scientific principles to the field of criminal Investigation. He also published Criminal Investigation.
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Landsteiner discovered the ABO blood groups and later received the Nobel Prize.
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Incorporated Gross' principles within a broken a workable crime lab. He became the founder and director of the Institute of Criminalistics at the University of Lyons, France
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Osborn published Questioned Documents and developed the fundamental principles of document examination.
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Lattes developed a method for determining blood type from dried blood.
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Vollmer established the First Crime Lab in the United States, which was located in Los Angeles.
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Goddard developed the comparison microscope, which is used to compare the bullets to find out if they were fired from the same weapon.